Belt-shifter.



w. DITTMEYBR.

BELT SHIPTBR. i PPLIOATIOI PILBD 10.25, 1811.

1,036,466. l Patented Aug.2o,1912.

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WILLIAM marmeren. oa'.- Boim, New vomi.

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Speciaoation of Letterslatent.

Patented Aug. 20, 1912.

Application filed August-25, 1911. Serial No..845,917.

ToI all whom.- it may concern Be it'known that I, VViLmAM Dirriiicviza,

New York, have invented certain new and.

useful Im roveinents in Belt-Shifters, of which the allowing is a specification.

This invention relates to a belt shifter for removing a belt from a fast pulley and lacing the same thereon where an ic le or oose pulley is not employed to coperat'e with the fast pulley.

An im )ortant object of this invention is to provide means of the above mentioned character, whereby the belt may) be quickly and easily shifted without su jecting the oplerator todanger or without injuring the be t.

A further object of the present invention is to provide a belt shifter, which issimple in construction and reliable and positive in operation.

Other objects and advantages of this invention will be a parent during the course of the following escription.

In the accompanying drawings forming'a part of this specification and in which like numerals are employed to designate like parts throughout the same, Figure 1 is a side view of the device, and, Fig. 2 is a front view of the same, and Fig. 3 is a detail view of a shaft.

In the drawings wherein is illustrated a preferred embodiment of my invention, the numeral 1 designates a line s aft upon which is mounted a pulley 2, fast thereonto be engaged by a. belt 3. Disposed near and to one side of this pulley is a fixed dependin bracket 4, having connection at its lower en with an angularly adjustable arm 5, by means of a bolt 6, as shown. This bolt ma he manipulated to clamp the arm 5 in a justment at different angular positions. Pivotally connected with the lower portion of the bracket 4 by means of a bolt 6', is a bell-crank lever 7, havin connection at one end with an operating ever or handle 8, such connection bein effected through the medium of a bolt D, w iereby the lever 8 may be angularly adjusted and locked at different positions with relation tothe bellcrank lever. -The forward arm of the bell crank lever 7 is provided with an elongated 'slot,10, for receivmga shaft 11,'carr ingo. rollerl 12. The shaft 11, is' provided a jacent thebellcrankflevervwith a `flange 18,-'and uponathe o posite. side of the bell-crank lever with a c amping nut 14, having a washer 15 interosc between the same and said bell-crank ever.. It. is thus seen that the shaft 11 and its roller ma be adjusted radially correspending to' t ie size of the pulley 2 and the s aft 11 subsequently clamped to the bellcrank lever. Connected 'with the angularly adjustablel arm 5 are arms 16 and 17 bv means of bolts 18, whereby an anffular adjustment of these arms may be haf with respect to the arm 5 if desired. The arms 16 and 17 are provided with elongated slots 18', for receiving shafts 19 and 20, which are adjustable in said slots 18 and are just like the shaft 11. The shafts 19 and 20 carry respectively rollers 21 and 22, as shown.

Rigidly connected with the lower end of the arm 5 is a horizontal arm or bar 23, carrying guides 24, which receive a reciprocatory rod' 25 that cannotl turn therein. The rod 25 carries upstanding belt shifting finrs 26, which are adjustably mounted -upon t e rod 25 and clam ed in different positions by bolts 27. through a suitable opening formed in the lower portion of the arm 5 and is provided outwardly of the saine with a pin 28, operating within an elongated slot 29 formed throu h the lower arm of a bell-crank lever 30. his bell-crank lever is pivoted, as shown at 31 with a bracket 32, rigidlvconnected with the arm 5, as shown. The upper arm of the bell-crank lever 30 is connected with the corresponding arm of the bell-crank lever 7 through the medium of a rig-d link 33.

he operation of the device is as follows Assuming that the belt 3 is operating upon the rotating pulley 2 and it is desired to shift the same from this pulley, the operator forces the lever 8 upwardly, which lowers the rollers 12 by a proper movement of the belt crank lever 7. Simultaneousl with the movement of the bell-crank lever the bell-crank lever 80 is operated to move the rod 25 to the right, whereby the fingers 26 shift the belt 3 from the pulley 2 onto the rollers 12, 21 and 22, such belt then assuming the position as indicated in dotted linesin Fig. 1. When returning t-lie belt 3 to the pulley 2, the lever 8 is moved downwardly, swinging bell-crank lever 7 for raising the roller 12, which travels a little above` .the yperl her l .ously wi h t e movement of the bell-crank of said pulley. Simultanehe rod 25 extendsy lever7, the linlc B3 moves the bell-crank lever 30 to the left, whereby the rod 25 is moved in that direction and the fingers 26' shift'thel belt 3 onto the ulley 2. I wish it understood t at the form of m inventionherewithl shown and described is to betaken as a preferred example/of the same and that certain changes in the shape, size, and arrangement of parts ma be resorted to without departing from-t 1e spirit of the invention or the scope of the subjoined claims. v a l r l Having thuslldescribed my invention, I claim:- 1 w; w, l. -II 1- r 1. The combination with? a gulley and-its belt, of 'a swinging'element isposed near one side of the pulley, a roller carried by the swingingclement, a stationary support, a roller carried by the stationary sup ort and disposed adjacent the first named ro ler, laterally movable belt shifting mechanism, means to move the swinging element in a plane arallel to the plane of rotation of the pul ey, and means eonneetin the swine'- ing element and laterally movab e belt shifaing mechanism so that the operate together.

2. The combination wit a pulley and its helt, of a pivoted element disposed near one side. of the ulley, to be swung in a plane arallel tot 1e plane of rot-ation of the puley, arollercarried by the pivoted element a. fixed support, a plurality of rollers carried named roller, a laterally movable belt shiftino' mechanism, a lever for o erating the be t shifting mechanism, a lin r connecting suid lever and ivoted element, and means to swing the pivoted element.

3. .'l`he combination with a ulley and its belt, of a pivoted element isposed near one side of the pulley and tofbe swung in a plane substantially parallel to the plane of rotation of the pu ley, a roller carried by said pivoted element, a plurality of fixed vsoporte', a plurality of rollers carried by pivotally'mounted tiereon, a roller adjustably mounted upon the bell-crank lever, a plurality of rollers adjustably mounted upon said fixed support, a belt shifting device, a bell-crank lever for operating the same, a link connecting said bell-crank levers, and means to move the first named bell-crank lever.

5. The combination with a pulley and its belt, of a fixed support, an arm angularly adjustably mounted thereon, a roller counected with the arm, a bell-crank lever pivoted with the fixed sup ort, a roller mounted u on said bell-cran: lever, a belt shifting evice a bell-crank lever to move the same, a linii connecting the bell-crank levers, and an o erating lever to move the first named be l-crank lever.

6. The combination with a pulley,rof a plurality of rollers disposed near one side 0f the pulle in a. superposed series and upon one si e of the center of rotation of thereby land disposed adjacent the firstthe pulley, 'a-pivoted element for supporting the uppermost of the rollers, a fixed element for supporting the lower rollers, and laterally movable belt shifting mechanism having connection operable simultaneously with the pivoted element.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM DITTMEYER. Witnesses:

`JOHN B. Bowsns,

MA'rmAs F. SonoNnAouLnn.

Copies of thil patent may be obtained for ave centi each, by addressing the Commissioner ot latents. Washington, D. 0. 

